From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Mon, 29 Apr 2013 22:06:13 +0000 (-0700)
Subject: vm: adjust ifdef for TINY_RCU
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~128^2~120
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8375ad98cc1defc36adf4a77d9ea1e71db51a371;p=pandora-kernel.git

vm: adjust ifdef for TINY_RCU

There is an ifdef in page_cache_get_speculative() that checks for !SMP
and TREE_RCU, which has been an impossible combination since the advent
of TINY_RCU.  The ifdef enables a fastpath that is valid when preemption
is disabled by rcu_read_lock() in UP systems, which is the case when
TINY_RCU is enabled.  This commit therefore adjusts the ifdef to
generate the fastpath when TINY_RCU is enabled.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reported-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed